Trolley.



"No 761,567.. v BATENTED MAY 31,1904 J. 'H. WALKER.

'TROLLEY.

APPLICATION FILED no. 24, 1903. no MODEL. s snnms-snnm 2.

VII/14 V WITNESSES: INVENTOR M .JMJZCVAZ/5, 72?

. A 770/?NEY8 PA'JQBN'I-EIDI Mum, 1904.

JQH. WALKER,

TROLLEY;

APPLICATION FILED 1120.24. 19os.

.3 snms snzn'r 3.

NO MODEL.

WITNESSES: H. a a I A 77'0RNEYS rent than can be ordinarily effected by the Patented May 31, 190%.

PATENT OFFI E.

JOHN H. WALKER, or LEXINGTON, KENTUCKY.

TROLLEY.

SPECIFICATION forming part of Letters-Patent No. 761,567, dated May 31, 1904.

, Applieation'filed December 24,1903. 'Serial No. 186,502. (No inodel.)

3 Kentucky, have made certain new and useful Improvements in'Trolleys, of which the following is a specification.

My invention is aniimprovement in trol-* leys, and has for an ob3ect, among others, to

provide a contact supplemental to the wheel in order to provide for taking 01f more ouruse of the wheel alone; and the invention consists in certain novel constructions and combinations of parts,.as will be hereinafter described and claimed.

I'n'the drawings, Figure 1 is a side elevation, partly broken away, of a trolley embodying Fig. 2 is a top plan view my invention. thereof.- Fig. 3 is a detail cross-section on about line 3 3 of Fig. 2. Fig. 4: isa section on about line-1 4: of Fig. 1. Fig. 5 is a detail perspective view of the outer side ofone ofthe inner washer-plates. Fig. 6 is a detail perspective view of the upper endof the harp. Fig. 7 is a detail perspective viewof the body portion of the supplemental take-off. Fig. 8 is a detail perspective-view of the cup with the carbon and copper plates therein. Fig. 9 is a detail section on about line 9 9 of Fig. 8, and

Fig. 10 is an enlarged section illustrating the means for holding the conductor-blocks. in connection with the upper ends of the harpprongs.

I An important object of my inventionis to provide means for increasing the surface con' tact of the conduit or trolley-wire with the united .at 1: and provided between such point.

5 of unionand the bearings of the trolley-wheel with a device such as shown inFigs. 2 and 3,

whereby the arms, may be positively forced away'from or'toward each other in order to in-.

creaseor decrease the tension of the arms on the bearings for the wheel, as well as to spread such arms to facilitate the removal and application of the trolley-wheel, as may be desired. In the construction shown the arms A are provided with the inwardly-projecting screws B, secured at their outer ends to the arms A and thread and the other a left thread and receiv ing a turnbuckle C, which may be turnedin' one direction to draw the arms'A together and in the other direction to force the said arms apart. By this construction the tensionof the arms .on the wheel can be regulated and the arms can be spread apart for the purpose before described. The arms A'are preferably made of steel and are provided at their outer 1 ends with the bearings for the wheel and arepreferably constructed at such ends with the bosses a on their outer sides, surrounding the ,openings for the sleeve on which the wheel turns. These bosses at are preferably of copper or other material of high conductivity and are on the outer sides of contact-blocks A, which are fitted in openings a in the arms A. As

shown in Fig. 4 and as better illustrated in sunk at their outer ends, as shown at (11. and the contact-block A is fitted in the opening a and is swaged out slightly into the countersunk portion a at the outer end of the open -ing a, so that the contact-blocks will beheld rigidly to and practically swaged into contact with the arms A of the trolley, as will be understood from Figs. 4 and 10. At their inner ends the contact-blocks project inwardly 3 beyond the inner faces of the trolley-arms A and are encircled at such point by the ringlikeheads D on the upper 'ends of the conductor branches D, such heads D being pref- Terably swaged intocontact and union-with the arms A in the practical embodiment of fthe invention.

of the contact-blocks A form bearings on zwhich rocks the supplemental take-off presently described, and such supplemental take- The bosses a on the outer ends Fig. 10, the openings a are slightly counteroff has positive electric connection through the contact-blocks and the heads D with the conductor branches D, and the wheel E also has positive-electric connection with the headrings D through the medium of the inner washer-plates F, which bear between the ends of the wheel and thesaid head-rings, as shown in Fig. 4. These inner washer-plates F have openings F, through which project the ends of the sleeve G, on which the bushing of the wheel E turns. In securing the washer-plates from turning I provide studs H on the conductor branches, which fit in notches f in the edges of the plates F, so the latter will be held from turning. In assembling the parts the plates F may be applied by fitting their notches f over the studs H and then turning the plates F until their openings register with the openings in the contact-blocks, when the sleeve and the bolt or shaft I may be applied, as shown in Fig. 4.

The supplemental take-off is shown in detail in Fig. 7 and includes a contact J torun against the wire and a carrier K for said contact, such carrier being pivoted at K, so it will rock concentrically with the axis of the trolley-wheel. In the construction shown the carrier includes the side arms K of copper, which are provided with the rings K encircling the bosses a and held thereon by the washers L and the spring-keys L or by other suitable means, as may be desired. The carrier has the upwardly-projecting portions above its bearings K, which portions carry the contact and also has the downwardly-projecting portions k forming crank-arms carrying the bridle M, which may be rigidly secured thereto and which may be operated by its weight or by the weights suspended therefrom and also forms a convenient point of connection for a rope by which-the auxiliary take-off may be operated into contact with the wire, if desired. Ordinarily the weight of the bridle M or of a separate weight applied thereto, if desired, will serveto hold the contact J of the auxiliary take-off properly in contact with the wire. The contact J includes, as shown, the carbon J and the plates J and J fitting in the box N, which latter is closed at its bottom N and ends N and N but is open at its ends N so the carbon and the copper plates J 2 and J 3 may contact with the inner sides of the arms K of the carrier. This box N is secured between the arms K by suitable rivets or other fastenings, as will be understood from Fig. 7, and the wall N of the box slopes or is undercut on its inner face, and the screw N turns through the front plate N and operates to bind the parts in the position shown in Fig. 9, and by withdrawing the screw N the plate J 3 may be removed and the carbon J and plate J be then removed for renewal or for any other purpose desired.

It will be noticed that the auxiliary take-ofi has its contact in-the form of a brush movable along the conductor-are 1n the use of the invention and increasing to a large extent the surface contact between the trolley and the conductor-wire. It will be readily seen that the touch of the brush against the conductorwire can be regulated in order to make same light or heavy, and this may be effected by varying the length of the steel bridle, greatly reducing the wear on the conductor-wire and the brush and increasing the life of same, as the brush will be very sensitive to the most delicate touch of the wire.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The improvement in trolleys herein described comprising the harp having its prongs provided at their outer ends with bearings for the wheel, the turnbuckle device between the said arms whereby they may be positively drawn together and spread apart, the outwardlyprojecting bosses on the outer sides of the harp-prongs surrounding the axis of the wheel, the wheel, and the auxiliary take-oil having a carrier pivoted between its ends on the bosses on the harp-prongs and provided at its upper end with a contact and at its lower end with a stirrup.

2. The combination of the harp-prongs provided with outwardly-projecting bosses surrounding the axis of the wheel, the wheel between and journaled in connection with said prongs and the auxiliary take-off having a carrier pivoted on the bosses of the harp-prongs and provided with a contact to move along the wire.

3. A trolley having a wheel and a carrier rocking relatively to the wheel and provided with a brush-like contact to move along the conductor-wire.

4. The combination of the trolley-arms, inwardly-projecting studs or projections, the inner washer-plates having notches receiving said studs or projections, and openings for the passage of the bearing devices for the wheel, such bearing devices, and the wheel.

5. A trolley having a trolley-wheel and an auxiliary take-off having a rocking carrier pivoted concentrically withthe trolley-wheel,pro vided with a depending portion the weight of which serves to hold the contact to the wire.

6. A trolley having a trolley wheel and a supplemental take-oil having a contact and a carrier therefor supported concentrically with the trolley-wheel, and having a depending stirrup.

7. A trolley having a harp, a trolley-wheel and an auxiliary take-off having a contact device and a box therefor open at its ends and a carrier therefor supported on the harp concentrically with the wheel, and having arms between which the box is secured.

8. A trolley having a supplemental take-01f provided with a carrier pivoted between its ends, a contact carried by the upper portion of the carrier, and means depending from the lower end of the carrier for operating the same.

9. The combination of the harp, the wheel, and the supplemental take-off having a carrier pivoted between its ends and having an upper portion carrying a contact, and a lower cranklike portion.

10. The combination of the harp-prongs,the contact-blockssecured to the harp-prongs and having the inner projecting portions and the outwardly projecting bosses .the conductor branches having rings encircling the inner projecting portions of the contactblocks, the wheel having electrical connection with the head-rings on the inwardly-projecting portions of the contact-block and the auxiliary take-off pivoted on the outwardly-projecting bosses of the contact-blocks.

11, An auxiliary take-off for trolleys comprising the carrier-arms and the box held between said arms and open at its ends whereby the contact material supported in said box may contact directly with the carrier-arms.

12. The combination of the carrier-arms the box secured between the same and having an undercut face at one side, the plate fitting against such side, the plate fitting against the opposite side, a clamping-screw engagingthe latter plate, and carbon between the said plates.

JOHN H. WALKER.

Witnesses:

SOLON (J. KEMON, PERRY B. TURPIN. 

